fixed typo

packages/rocketchat-lib/server/functions/settings.coffee

@@ -12,6 +12,7 @@ RocketChat.settings.add = (_id, value, options = {}) ->
 
 	options.packageValue = value
 	options.valueSource = 'packageValue'
+	options.ts = new Date
 
 	if process?.env?[_id]?
 		value = process.env[_id]
@@ -30,19 +31,12 @@ RocketChat.settings.add = (_id, value, options = {}) ->
 	if not options.i18nDescription?
 		options.i18nDescription = "#{_id}_Description"
 
-	upsertChanges =
+	return RocketChat.models.Settings.upsert { _id: _id },
 		$set: options
 		$setOnInsert:
 			value: value
 			createdAt: new Date
 
-	if options.persistent is true
-		upsertChanges.$unset = { ts: true }
-	else
-		upsertChanges.$set.ts = new Date
-
-	return RocketChat.models.Settings.upsert { _id: _id }, upsertChanges
-
 
 ###
 # Add a setting group
@@ -60,19 +54,14 @@ RocketChat.settings.addGroup = (_id, options = {}) ->
 	if not options.i18nDescription?
 		options.i18nDescription = "#{_id}_Description"
 
-	upsertChanges =
+	options.ts = new Date
+
+	return RocketChat.models.Settings.upsert { _id: _id },
 		$set: options
 		$setOnInsert:
 			type: 'group'
 			createdAt: new Date
 
-	if options.persistent is true
-		upsertChanges.$unset = { ts: true }
-	else
-		upsertChanges.$set.ts = new Date
-
-	return RocketChat.models.Settings.upsert { _id: _id }, upsertChanges
-
 
 ###
 # Remove a setting by id

packages/rocketchat-lib/server/startup/settings.coffee

@@ -121,5 +121,5 @@ Meteor.startup ->
 
 # Remove runtime settings (non-persistent)
 Meteor.startup ->
-	RocketChat.models.Settings.update({ ts: { $lt: RocketChat.settings.ts } }, { $set: { hidden: true } })
+	RocketChat.models.Settings.update({ ts: { $lt: RocketChat.settings.ts }, persistent: false }, { $set: { hidden: true } })
 

packages/rocketchat-lib/server/startup/settingsOnLoadCdnPrefix.coffee

 RocketChat.settings.onload 'CDN_PREFIX', (key, value, initialLoad) ->
 	if value?.trim() isnt ''
-		WebAppInternals.setBundledJsCssPrefix value
+		WebAppInternals?.setBundledJsCssPrefix value